Synthesis and Properties of Poly(ε-carprolactone)-based Poly(ester-urethane)s Having Quaternary Ammonium Groups

Abstract

ε-Caprolactone (CL) was polymerized by using N-methyldiethanolamine as an initiator followed by chain extension with hexamethylene diisocyanate afforded PCL-based poly(ester-urethane)s (PCLUs) with equally spaced tertiary amine groups. Treatment of the PCLUs with iodomethane converted tertiary amine groups to quaternary ammonium groups to give cationic ionomers. The thermal and mechanical properties of the obtained polymers were investigated.